I've seen this before when moving to a production environment
where my main swf wasn't in the root folder of the web site, but
the location bar was. Meaning, I had my app.swf in a folder called
flash, along with the framework.swf/swz, but the page the flash
file was embedded in was
http://my.site.com/. The answer for
me was to move the framework swf/swz down to the root folder of the
site, and make any modules realtive to root as well.